Tobacco-pipe.



A. E. MATSON.

TOBACCO PIPE.

APPLIOATION FILED Nov.1o. 1909.

973,870. Patented 0@t.25,1910.

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:f lff A. E. MATSON.

TOBACCO PIPE.

APPLICATION FILED NOV. 10. 1909.

Patented 0.11.25, 1910.

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Titz-.1%. 53

,4. mlm.

A. E. MATsoN. TOBACCO PIPE.

APPLIUATION FILED NOV. 10. 1909.

973,870. 4Pawlntea 0 :i;.25,1910.'V

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kA. E. MATSON.

TOBAGGO PIPE.

APPLICATION FILED N0v.1o, 1909.

973,870'.A vPatented o@n.25,f1910.

4 SHEETS-SHEET 4.

" line'10-10fof Fig. 9;,4 Fig. 11 is a section similarfto'f'Fig. *10.showing theposition of` UNITED sTATEs PATENT OFFICE. N

ANDREW E. MATSON, 0F EUREKA, CALIFORNIA. I

ToBAcco-PIPE. A y

` Specification of Letters Patent.

Patented Oct. 25, 1910.

Application led November l10, 1909. Serial No. 527,272.

To all whom yit may concern:

Be it known that I, ANDREW E. MATSON, a citizen of the United States,residing at Eureka, in the county of Humboldt and State of California',have invented certain new and useful Improvements in Tobacco- Pipes, ofwhiclnthe .following is 4a specification, reference being had to theaccompanying drawings.

This invention relates to certain new and useful improvements in tobaccopipes and has for its object to provide a simple and through the stem ofthe pipe may be ob-.

tained.

VVith'- these and other objects inl view, the invention consists of thenovel construction, combination and arrangement of parts hereinafterfully described and claimed, and illustrated in the accompanyingdrawings, in 'which-d -v Figure 1 is a longitudinal section, the cyl--inder being shown lin elevation; Fig.-2 isa similar vlewwlth thecylindershown 1n section; Fig. 3 is a transverse section taken ontheline 3--3 of Fig. 1; Fig. 4 is a bottom plan view of the cylinderremoved; Fig. 5 is a bottom planl view of the pipe bowl; Fig.- 6 is avertical longitudinal section Vof aslightly modified form ofthe device;Fig. 7 is a detail perspective View of thecylinder shown in Fig. 6; Fig.8 is a transverse section tal{en.on `tlie lline 8 8 of Fig. 7; F ig.` 9is-a longitudinall section of another modi-` cation; Fig. 10 l=is Casection' taken on :the

the'ycylinderto obtainfa` long circuit ofy t-lle smoke; Fig. 12 is a'detail perspective v'ie'w of the cylinder showninFigi 9; Fig.]12a isai* ltransverse ysection taken on'the line 1 2@l of F ig; '12;=Figs."13land 14 are top and bottom views respectively, of a modification of ythe cylinder illustrated in Fig. v12; Fig. 15

is a longitudinal section of a further modification of the deviceshowing the cylinder in elevation; Fig. 16 is a similar view with thecylinder shown in section; Fi 17 is a (section taken on the line 17-17 oFig. 16; Fig. 18 is a bottom plan View of the cylinder shown in Fig. 15;Fig. 19 is a detail section showing the mouthpiece disposed in spacedrelation to the end of the cylinder to obtain a short draft; Fig. 20 isa front end view of the cylinder; Fig. 21 is a longitudinal section of astill further modification,

the cylinder being shown partly in e'levation; Fig. 22 is a detailperspective View of thecylinder shown in Fig. 21; Fig. 23 isa transversesection of the forward end of the cylinder; Fig. 24 is a longitudinalsection of a different form of pipe illustrating still anothermodification; Figs. 25 and 26 are top and bottom plan views,respectively, of the cylinder shown in Fig. 24; and Fig. 27 is a frontend view of the last named cylinder.

.The present invention is designed as an improvement u on theconstruction shown and described 1n Patent No. 933,091, led January 19,1909, Serial No. 473,055y and issued to me September 7, 1909, and hasfor its object to increase thev effectiveness of the device withoutmaterially increasing the cost of production or complicating itsconstruction. With this end in view, I provide .a pipe comprising aseparable stem and bowl. The bowl 5 is provided with a depending screwthreaded reduced lower end G. Thls reduced rend of the bowl has threadedengagement in an interiorly thread- `ed boss 7 integrally formed withthe stem 8. This stem may be of any desired cross sectionalconfiguration but as shown in Fig. 3 the stem is' of rectangular tubularform and is adapted to receive a similarly formed ,cylinderv 9. It willbe noted that the stem 8 extends beyondiorforwardly of the bowl 5, andwhenthecylinder ispositioned therein it also extends in-l advance of thetobaccol l It'y will` be observed from reference 'to'Fig 1 that thebottom surface of the bowl.,5

does not extend into the stem l 8, but is spaced f Y from lthel in'nerfAwall thereof-.iv Thisy construction-provides la chamberfflO into which fthe smoke is drawn from the bowl before passing through the stem intothe mouth of the smoker. The cylinder 9 is provided at each of its edgesor vertices with a. groove or channel 11 which extends the entire lengththereof. This cylinder slightly tapers from its rear to its forward end,such forward end being disposed iush with the end of the stein 8.Transverse connecting passages 12 communicate with the longitudinalpassages at the forward end ofthe cylinder and connect thefstem wherebythe smoke will be conducted from one passage to the other thus providinga circuitous draft through the pipe stem before the smoke enters themouthpiece. Adjacent to the rear end of the cylinder a transverseconnecting passage 13 connects two adjacent longitudinal channels asshown inY Fig. 4 whereby the smoke may complete its passage from end toend of the cylinder. The top of the cylinder is cut away or recessed atits rear end as shown atl-1. This recess extends substantially to thebase of the channel 11 and serves to sufficiently enlarge the chain-`ber 10 to allow of the accumulation of lthe smoke therein in suicientvolume. A vertical opening yor passage 15 connects the chamber 10 at therear end of the recessed portion 14 with a central longitudinal bore 1G.A transverse passage 17 is`also provided which forms a communicatingpassage between the bore of the cylinder and. another of the passages11. The latter communicating opening is located inwardly of the opening15 and is preferably positioned centrally beneath the bowl 5.

A packin vring or washer 18 of cork or vother suitabe friction materialis ldisposed in the outer end of the tubular stem 8, this portion of thestem being cylindrically formed to receive said washer. A metallicfei'rule 19 is'secured upon the ,end of the stem and is provided withinterior threads to receive a nut 20. This nut is hollow to accommodatethe head of an adjustable 'screw 21 which has threaded engagementthrough the ring 18 to position its inner end beneath the opening 15 inthe cylinder. A fcrrule 22 is also secured upon the forward end of thestem 8 and is adapted to receive the squared head 23 of the mouth piece23. Centrally 5threaded into the head 23 there is a screw stud 24 uponwhich a friction ring 25 is threaded. This ring is adapted to benormally engaged with the end of the stem and the cylinder 9 and closesthe for-I ward ends of the cylinder passages 11. This ring also providesan air tight closure between the stem and mouth piece. The mouth pieceis of course provided with the usual longitudinal bore which is disposedin alinement with yand practically forms a continuation of the centralbore '1G of the cylinder.

A pluralityrof apertures 26 are formed in the bottom of the tobacco-bowl 5. As clearly shown in Fig. 5 these apertures, with the exceptionof the central one, communicate with an annular groove 27 in the botltomof the bowl. A radial groove 28 also extends outwardly from each of theapertures 26 to the periphery of the reduced depending portion of thebowl 5. As the smoke is drawn through these apertures into the chamber10, the nicotin will be deposited upon the walls of these variouspassages and also upon the walls of the passages 11 in the cylinderwhich form a" circuitous channel through which the smoke is drawn. Thusby the time the smoke enters the mouth piece to be drawninto the mouthof the smoker practically all of the nicotin which is carried thereby iswithdrawn and left in the stem of the pipe.

In the use of a pipe constructed in the manner above set forth, when ashort draft of the smoke is desired, the screw 21 is threaded outwardlyto dispose its inner end beyond the opening 15 whereby the smoke mayfreely enter through this opening di- ;rectly into the bore 16 of thecylinder from whence it is drawn through the mouth piece into the mouthof the smoker. When, however, it is desired to obtain the circuitousdraft or passage of the smoke in the stern,

the screw 21 is adjusted into the bore of the cylinder until its innerend is located beneath and closes the opening 15. Upon reference to Fig.2 it will be obvious that when the screw is thus adjusted the smoke willbe obliged to pass into the longitudinal channel 11 in the top of thecylinder which extends from the recessed portion l5 to the outer endthereof. Upon reaching the outer end of the cylinder the smoke will passthrough the transverse connecting passage 12 into the next adjacentlongitudinal channel. From this point it moves rearwardly and throughthe transverse connecting passage 13. It again moves to the forward endof the cylinder and after passing through another of the connectingpassages 12 into the adjacent longitudinal channel, it finally is drawnthrough the transverse opening 17 into the bore of the "cylinder andhence.

forth. By providing a tapering cylinder,

' the 'saliva and nicotin will fiow toward the outer end of the stem andbe accumulated in the rear ends of the channels 11' beyond the recess14. lBy removing the mouth piece and the friction collar 18 and nut 20,a free circulation of air will be permitted through the various passagesand the stem of the pipe can. be readily blown out and cleaned. Thecylinder is easily removed from the outer open end of the stem and afterun-' screwmgg; and removing the tobacco bowl 5,

each of the various parts may be thoroughly cleansed as easy accessisthus readily had to the'various channels or passages.

The device as above set forth defines the preferable embodiment of myinvention but in Figs. 6, 7 and 8 I have illustrated a slightly modifiedform, wherein the radial openings or passages 15 and 17 are dispensedwith and in lieu thereof the outer or smaller end of the cylinder isformed with the V- shaped passage or channel 29. The outer ends of thischannel communicate with and form a continuation of the longitudinalchannels 11a. It will be noted from Fig. 6 that nolongitudinal bore isprovided in this form of the device as it is primarily d esigned forpipes of that character which are such size as to limit the crosssectional area of the cylinder which is carried in the stem thereof.Therefore to obtain a short circuit of the smoke in the pipe stem, the uper channel 11L ter inates in advance oft e rear end of the cy inder.AThe cylinder isformed-with a short flattened portion ad-` l yfrom thecollecting chamber, isl prohibited and it is obliged 4to enter theeircuitous passage which is provided by the longitudinal channels,before it is drawn into the mouth piece. This passage of the smoke isattained in substantially the same manner as that previously described,the smoke first, however, passing through theshort transverse connectingpassage 13 in the rear end of the cylinder yfrom whence it flows forswardly into the longitudinal channel to theA .transverse connecting.passage 12 and into the next adjacent channel. ofthe smokecontinuesuntil it finally-passes into the -V-'shaped end channel 29, theinner end of which is disposed in alinelnent with the bore of the mouthpiece into which the smoke is finally drawn; In this form of the Thismovement device the packing ring 18 and adjusting screw 21 areeliminated and the outer open end of-the pipe stem is closed by theremovable nut or cap 20. The forward end of the cylinder is engaged withthe friction collar on the end of the mouth piece to normally closetheforward ends of the longitudinal channels 11?, but maybe adjusted in themanner before described to draw the smoke through each of the channels.Before this is possible, however, the pin 31 must be. removed from theposition shown in Fig. G. lVhen the end of the vmouth piece is engagedwith the stem, the smoke has a direct passage from the bowl through theupper channel of the cylinder and into the bore of the mouth piece.

In Figs. 9, 10, 11, 12 and 12a, another modification is shown. In thisform the cylinder is-also designed for use in pipes haviing acomparatively small stem. As clearly shown in Fig. 12 the cylinder isformed with a plurality of spiral grooves or 'channels 11b. Thesechannels extend the entire length of the cylinder and a short transversepassage 13"` connects two adjacent channels at the larger or outer endof the cylinder, and at the smaller end of the cylinder a transversepassage '12b connects the other passage or channel with one of thoseconnected at the outer end of the cylinder.

From reference to Fig. 9 it will be seen that the stem extends beneaththe bottom of the tobacco bowl, no collecting chamber 10 beconnectingpassage 12a connects the spiral channel which is disposed immediatelybelowthe opening 31 in thel stem with the next adjacent channel to theright thereof. Therefore the smoke will enter these two channels beforethe greatfvolume thereof will be drawn into the channel which has directcommunication with the opening 31. IVhen it is desired to obtain a longdraft or circuit of the smoke through the stem, theclosure cap in'theouter endA of the stem is removed andthe cylinder is rotated untilit assumes the position shown in Fig.'11l where it will be noted theother of the spiralI channels which is not connected by the passage 12ais disposed in communication with the opening 31. From this point thesmoke travels from thechannel to the forward end 'vention. In Fig. 10 itwill be noted that the of the cylinder through the passage 13"A into thenext. adjacent channel, from whence it flows to'the rear end of thecylinder' and through the passage` 12 into the direct circuit channel.The smoke is then drawn to the forward end ot' the cylinder and into themouth piece as above described.

Figs. 13 and 14C illustrate a` slightly ditt'erent arrangement of thespiral channel, or a combination of the longitudinal and spiral channelconstructions. In this form of the conducting cylinder, substantiallyone-halt' of the same is provided with a single spiral channel 11C whichextends from the smallerend thereof and is extended atits other endlongitudinallyto provide one of the communicating channels 11d formingthe circuitous passage. From reference to Fig. 13 it will be noted thatthe top' of the longitudinally channeled portion is flattened as shownat 32. This form of the cylinder provided with the longitudinal bore 16and an opening 33 extends through the cylinder adjacent to its rear endand communicates therewith. This opening is disposed beneath the pipebowl and receives the smoke which is drawn through the apertures in thebottom thereof. Vhen, however, the lower end of this opening is closedby means of the adjusting screw 21, the'only outlet for the ,smoke isprovided by the longitudinal channels 11i and the spiral channel 11";The smoke enters the circuitous channel at 11e shown in Fig. 13 andfills the various longitudinal channels until it enters the singlespiral channel 11 and passes to the forward end of the cylinder. tersthe bore of the c linder through a vertical o ening 33 in the forwardend thereof and In Figs. 15, 16, 17, 18 and 20 stil-l anothermodification of the device is shown. In this form the 'channeledcylinder is circular in cross section and is formed at its larger `endwith a head 9. This head is adapted to be seated between the interiorshoulder S of the pipe stem and the`friction ring which is disposedtherein and through which the adjustable screw 21 extends. This head isrovided with a notch in which a lug 8J( lntegrally formed in theinterior of the pipe stem is positioned. This lug prevents any rotativemovement of the cyhnder. The up-.

per portion of the cylinder immediately beneath the pipe bowl isflattened or recessed as at 14a. An opening 15a connects the bore of thecylinder with the collecting chamber beneath the pipe bowl and isadapted to be closed by the adjusting screw as previously set forth. Thecylinder is provided with the usual longitudinal channels 11* one ofwhich terminates in advance of the recessed portion 14 and is extendeddownwardly lo ows int-o the bore of the mouth piece.l

the bore of the cylinder as shown at 35. Thus when it is desired tosecure the longer passage of the smoke through the stem the adjustingscrew is threaded inwardly to close the opening 15a when the smoke willpass through the rear transverse passage and into the variouslongitudinal channels L11f and finally into the central bore of thecylinder from whence it flows to the mouth piece. An end View of thecylinder is illustrated in Fig. 20 wherein it will be noted that each ofthe longitudinal channels 11 extends the entire length of the cylinder.By pulling the mouth piece outwardly in the 'errule as shown in Fig.19the e'nds of' these channels may be opened to allow the smoke to passdirectly from each of the channels into the mouth piece. lVith theexception of the form illustrated in Figs. 13 and 1-1 this adjustment ofthe mouth piece will ef'- fect the same purpose in each of the variousforms of the device.

Still another modification of the device is illustrated in Figs. 21, 22andy 23. This form of the cylinder is designed for use in connectionwitha pipe of similar construction to that shown in Fig. 9 which is notprovided with a stem having its upper portion open beneath the pipebowl. ln this form of the device the smoke passes through the opening31b and through the various longitudinal channels 11g and the endtransverse connecting channels, and is eventually discharged at the endof the circuitous passage through a transverse opening 17a into the boreof the cylinder. When the short circuit is desired the adjusting screwis threaded outwardly to open communication between the vertical opening15b and the bore of the cylinder.

Figs. 24; to 27 inclusive illustrate a still further modification whichis adapted to be employed in connection with a pipe of different formand construction to those described in connection with the previousforms. 'It will be noted from reference to Fig. 24C that the pipe bowland stem are here lformed integral, the stem having a metallic Aferrule12 on its outer end to receive the curved mouth piece 23a. The cylinder9b is similarlyl provided with the longitudinal 'channels 11h and thetransverse connecting jacent to the rear end of' the. cylinder with thesmoke opening 31 which communicates with the tobacco bow From this pointthe smoke passes into the first transverse 'con' necting passage 12'.Aportiou of the smoke,

gitudinal channel' and pass through the transverse passage 13c on theopposite 'side' thereof. Thus the smoke will pass into the adjacentchannels upon the opposite sides of the central channel and through theother transverse channels shown in Fig. 26. The smoke will then flow tothe forward end of the cylinder and into the V-shaped channel 29a lwhichconnects the ends of the longitudinal channels. From this pointthe smokeis drawn into the bore lof the mouth piece by the inhalation of thesmoker. When it is desired to obtain ashort circuit of the smoke thecylinder is turned in the stem until either of the longitudinal chan-Vnels which communicate with -t-he outer end of the V-shaped channel 29aare disposed in registration with the opening 31a.

From the foregoing it will -be seen that I have provided a simple andpractical smokf ing pipe by means of which the smoke may be drawn'through the mouth piece and during' its passage from the bowl of thepipe it 1s cooled andrelieved of t-he greater part of the nicotincarried thereby and ordinarily inhaled into the lungs of the smoker. Thearrangement of the several elements is such that the appearance of thepipe is in no way detracted from and its efliciency is materiallyincreased owing to the :fact that it may be readily disassembled and thevarious channels and passages thoroughly cleaned of the mcotin which has4been deposited on the walls thereof.

The various forms illustrated in the drawlngs and described above areillustrative of n umerous ways in which the 'long'a-nd short clrcuits ofthe smoke through the pipe stem may be obtained. I also contemplatemanufacturing theo linder in other forms which are not herein escribedbut fairly fall with-l in the scope of the invention. It will also beobvious that the form, proportions, and minor details of constructionmay bea-ltered 'to adapt the device for use in connection with plpes ofvarious types without necessarily departing from the essential featuresor sacrificing any of the advantages of the invention. 4 t

Having thus described the 1nvent1on,\vhat v is claimed is:

1. A tobacco pipe comprising a bowl and sitioned in the stem andextending beneath the bowl, the adjacent channels of said members beingconnected, and a' mouthpiece secured on the forward end of the stem, theadjustment of said member providing a long or shortcircuit of the smokethrough the stem from the bowl to the mouthpiece.

2.A ltobacco pipe comprising a bowl and stem, a' removable member insaid stem extending beneath the bowl provided with a circuitous passageand having a communieating passage between said circuitous passage andthe tobacco chamber, a mouth piece frictionally held in engagement withthe forward end of the stem, and means for directing the smoke into saidpassages to provide a long or short circuit through the stem to the boreof the mouth piece.

3. A tobacco pipe comprising a bowl and tubular stem, a removable memberin said stem extending beneath the bowl and spaced therefrom Vand havinga circuitous smoke conducting passage therein, the outer end of saidstem extending beyond the bowl, a

recting the smoke into said passages to obtain a long or short circuitthrough the stem to the bore of they mouth piece.

4. A tobacco pipe comprising a bowl and tubular stem, a removable memberin said stem having a plurality of longitudinall channels and transversepassages at its op- `posite ends, said member extending beneath thebowl, said bowl beingy provided with a plurality of apertures throughthe bottom thereof, a mouth piece frictionally held in engagement withthe forward end of said stem, and means for directing the smoke intosaid channels to provide a longv or short circuit in its passage fromthe bowl to the bore of the mouthpiece.

5. A tobacco pipe comprising a separable bowl and stem, a removablemember disposed in said stem an'd extending beneath the bowl, I saidmember tapering'from its rear-to its forward end and having a pluralit-yof longitudinal surface channels and transverse connecting passages ateach end, the rear end of said member being spaced 'from the bottom ofthe bowl to provide a collecting chamber, said bowl having aplurality'of vertical apertures through the bottom thereof, a mouthpiecefrictionally held in longitudinal alinement with said stem and adaptedto be moved outwardly thereof,

and means for directing the smoke into cerj 'tam offsald channels toprovide a long or short, circuit therefor through the stem to the boreof the mouth piece.-

6. A tobacco pipe comprising a tubular steln having a tubular bossformed adjacent to its outer end, a bowl provided with a reduceddepending screw threaded extension adapted for engagement in said boss,a removable member positioned in said stem extendingbeneath the bowl inspaced relation thereto to form aV smoke collecting chamber, said memberhaving a plurality of longitudinal surface channels and transverseconnectlng passages at each end, a

mouth piecel held in frictional engagement with the forward end of saidstem, and means for directing the smoke into certain of said channels toprovide a long or short circuit through the stem to the bore of themouth piece.

7. A tobacco pipe comprising a bowl and stem, a ren'iovable adjustablechanneled member arranged in the stem and extending beneath the bowl,said member being longitudinally tapered to the outer end of the stem,said member having passages communicating with adjacent channels, and amouthpiece adjustably held in longitudinal alinement with the outer endof the stem, the adjustment of said channeled member providing a long orshort circuit through the stein for thc passage of the smoke from thebowl to the mouthpiece.

8. A tobacco pipe comprising a tubular stem and bowl having removableengagement therewith, said stein extending beyond the bowl, a removablemember positioned in said stem extending beneath the bowl in spacedrelation thereto forming a collecting chamber, said member beingprovidedwith a plurality of surface ,channels and a central bore, said channelsbeing connected by transverse passages at opposite ends, the bere ofsaid member communicating with one of said channels by a transversepassage, a ferrule secured to the forward end of said stem, a mouthpiece frictionally held in said ferrule in engagement with the stemadapted to close the ends of said channels, said member. having a secondpassage extending vertically therethrough and connecting the bore withthe collecting chamber, and means adjustably engaged in the end of saidmember adapted to direct the smoke into said channels and passa es toform a long or short circuit throug the stem to the bore of the mouthpiece. j

9. A tobacco pipe comprising a separable bowl and stem, the bore'of saidstem tapering from the bowl to its outer end, a mouthpiece frictionallyheld in engagement against the end of the stem and longitudinallyadjustable with relation thereto, and a longitudinally tapering smokedirecting member removably positioned in thestem and extending beneaththe bowl, said member having. a plurality of inter-communicatinglongitudinal surface passages Aand adapted to be adjusted in the stem toprovide a long or short circuit for the smoke from the bowl to themouthpiece.

10. A tobacco pipe comprising a tubularv stem having a boss integrallyformed therewith adjacent to one end, a bowl provided with a reduceddepending portion having exterior threads for engagement in said boss,said bow-l having a plurality of Vertical api frictionally held erturestherethrough and an annular groove in the bottom surface thereof, aremovable member positioned in said stem and extending beneath saidbowl-fin spaced relation thereto to form a collecting chamber, the topof said member below the bowl being recessed, said member having aplurality of longitudinal channels and a central bore, the adjacentchannels being connected at their opposite ends by transverse passages,a vertical communicating passage between the collecting chamber and thebore of said member, an adjusting screw having threaded engagement inthe end of said member adapted to be positioned beneath said passage toclose the same, said member having a transverse passage extending fromone of the longitudinal channels to the bore, the closure of the firstnamed passage being adapted to direct the smoke into the channels toprovide a long circuit therethrough to the central bore, and a removableclosure engaged in the outer end of said stem.

11. A tobacco pipe comprising a tubular stem and a bowl having threadedremovable engagement therewith adjacent to its outer end, said bowlhaving a plurality of apertures through its bottom, said aperturescommunicating with an annular groove in the bottom thereof and a radialgroove extending outwardly from each of said apertures, a removablemember in'said stem extending beyond the bowl, said member havingaplurality of longitudinal channels extending its entire length andtransverse passages connecting the adjacent channels at the oppositeends thereof, said member having a central longitudinal bore and atransverse opening between one of the channels and said bore, saidmember having a vertical opening rearwardly of the transverse openingbetween the bore and the collecting chamber, an adjusting screw engagedin the endotsaid member adapted to close the lower end of said opening,a removable closure for the outer end of said stem and a mouth piece inengagement with the end of the stem and member and adapted to be movedoutwardly therefrom to open the ends of said channels.

12. A tobacco pipe comprising a tubular stem and bowl removably securedthereto, a removable member in said stem extending beneath the' bowl,said member having a circuitous smokel conducting surface passage and acentral longitudinal bore, said member being spaced from the bottom ofthe bowl toform a collecting chamber, the bowl having a plurality ofvertical apertures communicating therewith, said member having avertical opening between the collecting chamberand the bore and atransverse opening in advance thereof, a friction collar disposed in theouter open end ofsaid stem, an adjusting screw carried by saidcollarextending into saidmember, said screw being adapted to clos'e thevertical opening, a ferrule secured on each end of said stem, a hollowclosure cap threaded in the errule on the outer end of said stem, amouth piece carrying a friction collar adapted to hold the -same inengagementl with the ^forward end of said cylinder, said mouth piecebeing adapted to be mo'ved outwardly in the ferrule to open directcommunication between the circuitous passage and the bore thereof. 13. Atobacqo pipe comprising a separable stem and bowl, a mouthpieceadjustably held against the end of the stem, said stem having alongitudinally tapering bore, a smoke directing member having aplurality of inter-communicating surface channels and a centrallongitudinally extending bore,

said member having a passage therein connecting the borel with one ofthechannels, f, and means adjustable in the end of said member to open orclose said connecting passage whereby a long or short circuit for thesmoke from the bowl to the mouthpiece is provided. V

`14:. A tobacco pipe comprising. a separable bowl and stem, a smokedirecting member '30 removably arranged'in the 'stemand adjustabletherein, 'said -member. eiztending beneath the bowl in spaced relationthereto and having a plurality of longitudinally eX- tending surfacepassages and a central bore,

and means adjustably engaging with said member to cause the smoketo iowthrough the passages or permit the same to enter the bore whereby a longor sh'rt circuit is provided froin' the bowl to the mouthpiece.

15. A tobacco pipe comprisinga bowl and 40 stem, said stem having itsbore longitudinally tapered from the bowl to its outer end, amouthpiece' frictionally held against the end of the stem and adjustablewith relation thereto, "the other end of said stem eXtending beneath thebowl and being open, a longitudinally tapered channeled memberarr'ange'd in the stem and extending beneath the bowl, said member beingadapted to provide a circuitous passage for the smoke from 5()

